Lập trình trên Window cơ bản phần 8

Lập trình trên Window cơ bản phần 8

Lập trình trên Windows

với Microsoft® NET

Giảng viên : Hồ Hoàn Kiếm

SDI (1)

fj Untitled - Notepad ïÏ || xi

File Edit Format Help

Notepad allows only one docuemnt to be open at a time 4

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File Edit Format Help

Notepad allows only one docuemnt to be open at a time «i

An SDI

application can

-| Active Window | Basen active window sr

at a time

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Al v =

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Duter Window

(or)

Parent

Window

— |

= |

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Child Window

Designing an ¬ application

IsMdiContainer = true

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| Eile Edit View Insert Format Tools Data Window Help

Activating and Deactivating Windows

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child window

— wo

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Active child window

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Paste

As with the control

at runtime

As in MDI form

during design

= Displays a menu at runtime

= MainMenu can be created in two ways:

-I|xi

1 File Edit Using the MainMenu

control, and menu designer

at design time

Creating an instance of the

MainMenu class at runtime

MainMenu myMainMenu = new MainMenu();

this.Menu = myMainMenu;

Menultems

S

Sh ortCut Text

PerformSelect

Index

ShowShortCut

EVENTs

rer

= Context menus give users access to frequently used commands by clicking the right mouse button

= Context menus are created with the help of the

ContextMenu control

oS

| oolBar

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= |t is situated immediately below the menu bar

= The buttons in a ToolBar are analogous to the items in a menu

1d ToolBar control icon

A as in TooIBox

Different button appearance options:

* DropDownButton

* Separator

* ToggleButton

"Validate data in all the fields in the form

"Enable and Disable controls based on

user Input

Main Events

"KeyPress

*"KeyDown

"KeyUp

[ypes of Errors

mistake in typing a keyword, missing punctuation, or an incorrectly specified variable

action

errors or run-time errors, but the results are not which were intended

ErrorProvider control can be used to

display an error icon when the user enters

invalid data

Properties Methods

BlinkStyle SetError

ContainerControl

Icon

Exceptions can be handled with the help of :

catch throw final!)

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rr ¬

{

try {

throw new NullReferenceException();

}

catch (NullReferenceException)

{

MessageBox Show("Organization name cannot be empty");

textBoxl.Focus();